Donald Trump’s team is using a more sophisticated approach to help prepare the Republican candidate for this year’s first presidential debate, Politico reports.

Donald Trump’s team has created a detailed analysis of Hillary Clinton’s debate style — including her body language and verbal tics — with the goal of helping the GOP nominee exploit weaknesses during Monday’s debate, according to three sources familiar with Trump’s preparations.

The “psychological profile,” as the analysis is being called, is based on a statistical analysis of videos from 16 years’ worth of Clinton’s debates, dating back to her 2000 campaign for Senate in New York, according to the operatives. They said it was assembled with assistance from a political data firm called Cambridge Analytica that specializes in “psychographic” modeling of voters and donors, and that Trump’s top advisers have been pleased with the results.

The advisers believe that the profile proves that Clinton has significant weaknesses and that they have identified her ‘tells’ — words, phrases or gestures she uses when she’s unsure of an answer, or is trying to deflect her way out of an uncomfortable question, according to the operatives familiar with the preparations.